Puffing

Verb

1. Present participle of puff
2. (United States) Leaving a car engine running unattended, especially in cold weather to warm it up.
• It's called "puffing," when drivers start their car and then leave it unattended while running.

Full definition of puffing

Noun

1. The act of one who puffs.the puffings and pantings of a man running to catch a train
2. A puffy ornament.
• 1825, The Ladies' Monthly Museum (volume 21, page 50)Evening dresses are trimmed in a variety of ways, with puffings of crape, fringes, and ornaments, of the richest patterns...
3. (legal) An opinion or judgment, often made by the seller of property to a potential buyer, that is not made as a representation of fact.